Vegetarian

A vegetarian was an individual who voluntarily excluded any meat-based foods from their diets (not to be confused with herbivores, whose natural diet consisted solely of plant-based foods). Though a vegetarian diet is usually seen as a more moral choice, (as opposed to eating slaughtered meat) it has been noted by Spock that as plants are living organisms, vegetarians and meat-eaters alike feed on death. (TOS: "Wolf in the Fold")